Fatal error: Uncaught Error: Interface "Drupal\Core\Config\Entity\ThirdPartySettingsInterface" not found in /home/www/drupal8/test/modules/webform/src/WebformThirdPartySettingsManagerInterface.php:10 Stack trace: #0 {main} thrown in /home/www/drupal8/test/modules/webform/src/WebformThirdPartySettingsManagerInterface.php on line 10